4
2.2
General Notes
Circuits
Refers to a physical electrical interface for the
analog
loop, indicating signals or relays, and
common alarm, supervisory, and trouble relay outputs.
Zone/Group
Is a logical concept for a Fire Alarm Protected Area, and will consist of at least one Circuit. The
MR-3318 uses Groups extensively to facilitate annunciation of multiple input and output points
on the 30 (up to 64) LED display and to facilitate the bypassing of inputs and outputs.
Display Points
The MR-3318 LCD display annunciates the status of the system and connected devices.
Wiring Styles
The
analog
loop can be connected in Class B (Style 4), Class A (Style 6), or Class X (Style 7)
configurations.
